D. none of these
A train covers a distance of 12 km in 10 minutes. If it takes 6 seconds to pass a telegraph post, then the length of the train is
River is running at 3 kmph. It takes a man twice as long to row up as to row down the river. The rate of the main in still water is:
A watch gains 12 seconds every 3 hours, what time will it show at 10 A.M. on Tuesday if the watch is set right at 3 A.M. on Sunday?
The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream?
In a 100m race A cover the distance in 36 seconds and B in 45 seconds. In this race A beats B by
The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 kms in 4 hours then the speed of the first train is:
Walking at 2/3 of his usual speed a man is 2 hrs.late. Find his actual travel time
Mary jogs 9 km at a speed of 6 km per hour. At what speed would she need to jog during the next 1.5 hours to have an average of 9 km per hour for the entire jogging session?
The length of the bridge which a train, 130 metres long and travelling at 45 km per hour, can cross in 30 seconds, is
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?